Deets is a slang term for details.
Deets refers to details or additional information, usually in the form of gossip, home addresses, etc.
Popular phrases include “stay tuned for more deets,” when one has details to give and “DM me the deets”, when one is inquiring about info.
Just as “details” has multiple meanings, “deets” does as well. When describing their OOTD, fashion influencers will sometimes use deets to refer to clothing and accessories.